Surprises and reverses can serve as an incentive for great accomplishment. There are no rules here, we're just trying to accomplish something.
Thomas A. EdisonThe first requisite of success is the ability to apply your physical and mental energies to one problem without growing weary.
Thomas A. EdisonFocus on how the end-user customers perceive the impact of your innovation - rather than on how you, the innovators, perceive it.
Thomas A. Edison